Hello There
Question about a P/U

My name is Matt and I wanted to say hello. I have a question that i hope I can get help with. I have a 1979 Les Paul Custom Silverburst. I got the guitar in 1988 and it had Dimarzio Super Distortion pickups in the bridge position. I am looking to restore the guitar back to factory and need help in finding out what type of p/u it had at the time of production.